TryGhost/Ghost — pull request #4686 by jaswilli (2014-12-19 21:54:05+00:00)
Title: Finish up post count support in tags API

Refs #4521
- Handle 'include' query param in tags API.
- Add post_count support when fetching a tag with findOne.
- Remove post_count from options.include after processing.
- Extra database query no longer used to fetch post_count.